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Isochemical metamorphism origin of the newly discovered Baqing jadeitoid, eastern-central Tibet, China
No full textThe formation of most jadeitites and other jadeite-rich rocks (jadeitoids) during subduction is thought to occur by precipitation (P-type) or metasomatism (R-type) by infiltration of Na-Al-Si-rich aqueous fluids because of the compositional similarity of the rocks to inferred subduction fluids. Whether these rocks can form by isochemical metamorphism (I-type) during subduction is still hotly debated. A characteristic of I-type jadeitoid is that it exhibits a similar prograde metamorphic record as associated eclogite, in contrast to P- and R-type jadeitite and jadeitoids that are typically enclosed in serpentinite derived from the mantle wedge and either lack a prograde metamorphic history (R-type and P-type) or probably experience a prograde history (R-type) that is difficult to discern owing to the high variance of the jadeite-dominated assemblages and alteration by subduction fluids. The recently discovered Baqing (eastern-central Tibet) jadeitoid is enclosed by quartzo-feldspathic schist and has a peak metamorphic assemblage of almandine + jadeite/omphacite + phengite/paragonite + rutile + quartz, similar to eclogite. Abundant mineral inclusions in almandine, especially rutile inclusions with increasing Zr contents from the core to rim of almandine, provide an opportunity to further decode the jadeitoid-forming processes. In this study, pseudosections and Zr-in-rutile thermometry, together with conventional geothermobarometers, were employed to decipher the metamorphic history of Baqing jadeitoids. Two analysed Baqing jadeitoids exhibit a similar clockwise P–T path, starting from early metamorphic conditions of 5–7 kbar, 350–440°C, to different peak conditions (27–29 kbar, 730–760°C, or 20–23 kbar, 670–710°C), followed by relatively consistent retrograde metamorphic conditions of 6–7 kbar, 530–600°C. This result indicates a similar subduction history to the Baqing eclogite. In addition, the Baqing jadeitoids show similar geochemical characteristics to some Na-rich, K-depleted and Ca-depleted sedimentary rocks or plagiogranite. Therefore, we propose an isochemical genesis for the Baqing jadeitoid, rather than a metasomatic origin
Differential associations between posttraumatic cognitions, posttraumatic stress disorder symptoms, and race among Black and White veterans seeking treatment for assaultive military sexual trauma
No full textPast research supports the role of negative posttraumatic cognitions (NPCs) in the development and maintenance of posttraumatic stress disorder (PTSD). The relationship between NPCs and PTSD may be uniquely impacted by racial status and experiences of military sexual trauma (MST), both of which may have a unique impact on one’s understanding of self, others, and the world. We explored racial differences in the association between NPCs and PTSD symptom clusters in a sample of veterans endorsing MST (N = 139; 74.8% White, 25.2% Black). A path model was created and analyzed both with the full sample and separately by racial group. In the full sample, NPCs about the self and world were significantly associated with intrusion, negative alterations in cognitions and mood (NACM), and arousal, but not avoidance. Self-blame was not a significant predictor of negative alterations in cognition in mood. This model was consistent in the White veteran model, whereas only negative cognitions about the self were associated with NACM in the Black veteran path model. NPCs about the self and world appear important to non-avoidance PTSD symptomatology related to MST and thus should be targeted in treatment. For Black veterans endorsing distress related to NACM symptoms, negative beliefs about the self should be specifically considered for intervention
Evaluation of resurgence following differential reinforcement of alternative behavior with and without extinction in a human operant model
No full textOne of the most common treatments for severe challenging behavior involves placing the challenging behavior on extinction and differentially reinforcing an alternative response (DRA). However, extinction is not always feasible and may be unsafe or impractical to implement in some circumstances. Thus, implementing a DRA without extinction intervention may be necessary for some cases. Currently, the extent to which DRA without extinction produces durable treatment outcomes, particularly as it relates to the resurgence of challenging behavior, is unclear. The present study investigated resurgence following DRA with and without extinction using a three-phase resurgence evaluation in a translational human operant model with college students as participants. All participants demonstrated resurgence across both experimental groups. Although there were no statistically significant differences in the prevalence, magnitude, or persistence of resurgence between groups, levels of resurgence magnitude were relatively higher in the DRA-without-extinction group than in the DRA-with-extinction group. Clinical implications of these findings and directions for future human operant investigations of resurgence are discussed
Inclusive supervision: Examining model congruence through supervisor practice
No full textThis qualitative inquiry examined the supervisory practices of 12 student-affairs professionals who were identified by their supervisees as modeling the tenets of inclusive supervision. Through a deductive research design and pattern-matching analysis, this study sought to test the consistency of the inclusive supervision model through the practices of supervisors. Analysis suggests a strong congruence between supervisor practices and the tenets of inclusive supervision
Perceptions of caregiver burden and living arrangements of adult children with autism
No full textThe purpose of this study is to examine whether the living arrangements of adults with autism spectrum disorder (ASD) contribute to caregiver burden. The sample included 320 aging parents of adult children with ASD who were living in their parents’ homes, independently, independently with assistance, or residential group homes. Aging parents completed a survey measuring four types of caregiver burden (time dependence, developmental, emotional, and financial). Kruskal–Wallis analysis of variance was used to determine whether differences in caregiver burden by the living arrangements of adult children with autism were significant. Aging parents whose adult children lived in group homes tended to have the greatest caregiver burden, while those whose adult children lived independently had the least caregiver burden. Social workers can provide support for parents, adults with ASD, and the family unit as they explore the benefits and challenges of different living arrangements
Necessary and sufficient conditions for the existence of fuzzy doubly strong equilibria in generalized fuzzy games
No full textThe concept of doubly strong equilibrium is a refinement of the concept of strong Nash equilibrium which represents the most desirable situations for generalized games, where all players get the best among the available outcomes. In this paper, we use necessary and sufficient conditions for the existence of solutions of the Ky Fan minimax inequality to establish necessary and sufficient conditions for the existence of fuzzy doubly strong equilibria in generalized fuzzy games. As consequences, we obtain sufficient conditions for the existence of (fuzzy) strong Nash equilibria in generalized (fuzzy) games, including generalized games with countable infinitely many players, which generalize existing existence theorems for strong Nash equilibria in games
Diabetes among racial and ethnically diverse older adults in the United States with cognitive limitations
No full textDiabetes is one of the most common coexisting conditions among adults with cognitive limitations. Complexities of diabetes care present challenges for older adults and their caregivers. Few studies have evaluated disparities in the prevalence of coexisting diabetes among older adults with cognitive limitations by race/ethnicity and nativity. Our objectives were to (1) estimate the odds of coexisting diabetes among US- and foreign-born racial/ethnic groups compared to US-born non-Hispanic White older adults and (2) compare US- and foreign-born older adults within each racial/ethnic group. We linked and analyzed 2000–2017 National Health Interview Survey and 2001–2018 Medical Expenditure Panel Survey data among older adults with cognitive limitations (ages ≥ 65 years, n = 4688). The overall prevalence of coexisting diabetes among older adults with cognitive limitations was 30.3%. Among older adults with cognitive limitations and after adjusted for age, sex, education, and risk factors for diabetes and cognitive limitations, non-Hispanic Black (US-born OR = 1.56, 95%CI = 1.23–1.98; foreign-born OR = 2.69, 95%CI = 1.20–6.05) and Hispanic (US-born OR = 2.13, 95%CI = 1.34–3.40; foreign-born OR = 2.02, 95%CI = 1.49–2.72) older adults had higher odds of coexisting diabetes compared to US-born non-Hispanic Whites. There were no differences in the odds of coexisting diabetes among foreign-born non-Hispanic Black and Hispanic adults compared to US-born counterparts. Findings suggest a large potential burden of coexisting diabetes among this growing populations of US- and foreign-born racially/ethnically diverse older adults with cognitive limitations. Future studies are needed to examine how diabetes self-efficacy, treatment, and monitoring are impacted by cognitive limitations and determine ways to improve care in collaboration with caregivers and healthcare providers
A provenance-aware approach to big data workflow management in heterogeneous cloud environments
No full textWetted ramps selectively block upstream passage of adult sea lampreys
No full textDams fragment stream habitats and fishways around dams typically serve few species that are strong swimmers or jumpers. We tested a prototype wetted ramp designed to allow upstream passage of small-bodied fishes while blocking upstream movement of invasive sea lampreys in the Laurentian Great Lakes. We tested short, smooth ramps with 5–10 mm water depth in various combinations of ramp angle, water flow, and swim channel width with the aim to selectively block adult migrating sea lampreys (Petromyzon marinus) while passing sub-adult white suckers (Catostomus commersonii) and creek chubs (Semotilus atromaculatus). Sea lampreys easily passed a 0.75 ramp at a 5° angle, but very few individuals passed a similar ramp at a 10° angle, and none passed a longer ramp at a 5° angle. Limiting the amplitude of tailbeats in a narrow channel did not hamper lampreys or the other species. Greater water flow, and thereby greater immersion depth on the ramp, fostered passage for all species. Smaller-bodied individuals of creek chubs and white suckers performed best on the ramp. We showed that wetted ramps could be incorporated into fishways at low-head dams to aid the passage of smaller-bodied fishes while also blocking the spawning migration of adult sea lampreys
Career enhancement strategies, supportive work relationships and subjective career success: the moderating role of family-work conflict
No full textPurpose Our study examines the impact of career enhancing strategies (CES), supportive work relationships and family-work conflict (FWC) on subjective career success.Design/methodology/approach The data were sourced from 107 professionals, who were the members of an alumni LinkedIn group of the Masters Human Resource degree program from a university in the Midwestern United States. Multiple regression analysis was employed to test the study hypotheses.Findings Results indicate that both forms of CES - networking and mentoring - were positively associated with subjective career success, and there exists a positive association between perceived organizational support and subjective career success. Further, FWC moderates the relationship between subjective career success and mentoring and also moderates the relationship between subjective career success and perceived supervisor support.Practical implications Organizations should provide opportunities to employees for networking and institute formal mentoring programs to enhance employees\u27 perceptions of subjective career success. It is also crucial for organizations to promote work-life balance initiatives that can help reduce the levels of FWC experienced by employees.Originality/value Our study makes important contributions to the extant literature by highlighting the importance of CES and supportive work relationships in ensuring subjective career success. It also identifies an important moderator, FWC, which can significantly impact subjective career success